package at.meder.evaluation.handler;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.handlers.HandlerUtil;

import at.meder.evaluation.View;
import at.meder.evaluation.editors.EditorInput;
import at.meder.evaluation.model.Criterion;

public class OpenEditor extends AbstractHandler {

	
	
	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		// Get the view
		IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);
		IWorkbenchPage page = window.getActivePage();
		View view = (View) page.findView(View.ID);
		
		// Get the selection
		ISelection selection = view.getSite().getSelectionProvider()
				.getSelection();
		if (selection != null && selection instanceof IStructuredSelection) {
			Object obj = ((IStructuredSelection) selection).getFirstElement();
			// If we had a selection lets open the editor
			if (obj != null) {
				Criterion criterion = (Criterion) obj;
				EditorInput input = new EditorInput(
						criterion.getId());
				try {
					page.openEditor(input, criterion.getEditorId());
					} catch (PartInitException e) {
					throw new RuntimeException(e);
				}
	
				
			}
		}
		return null;

	}

}
